The maximum reach of a fiber optic cable depends on several factors, such as the type of optical fiber, the wavelength used for data transmission, the quality of the cable, and the environmental conditions.

In general, single-mode fiber optic cables can transmit data over very long distances, up to several hundred kilometers, without significant signal loss. This makes them ideal for long distance connections such as connections between cities or countries.

On the other hand, multimode fiber optic cables have a more limited maximum range, typically up to several kilometers. They are more often used for short-distance connections such as in local area networks, data centers or buildings.

It is important to note that maximum range can be affected by cable quality, signal strength, connectors used, as well as environmental factors such as temperature, humidity and electromagnetic interference.

In summary, the maximum reach of a fiber optic cable can vary depending on many factors, but in general, single-mode fiber optic cables have a higher maximum reach than multimode fiber optic cables.